Alert archive / Florida / Tornado Warnings in 1998

Tornado Warning 49, NWS Tampa Bay, FL

July 12, 1998DeSoto County, Florida

NWS Tampa Bay, FL issued this tornado warning at Jul 12, 1998, 4:00 PM EDT for DeSoto County, Florida. It was in force for 50 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 12, 1998, 4:00 PM EDT (20:00 UTC)
Expired
Jul 12, 1998, 4:50 PM EDT
In force
50 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County DeSoto County, FL

The radar

The Tampa radar (KTBW), 82 km from the middle of the area, began a volume at 20:03 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Jul 12, 4:13 PM EDTThunderstorm WindArcadia, FLA downburst removed a large portion of the roof of a home at the corner of Garvin and Horshoe Roads in Arcadia.
Jul 12, 4:30 PM EDTThunderstorm Wind 52Arcadia, FLA thunderstorm wind gust of 60 mph was reported near the Arcadia Airport.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 8.0 hours before the alert went out and 82 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 12:00Z on 1998-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1601 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 12:00Z on 1998-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1601 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1054 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KTBW 122000 RRA
TORTBW
FLC027-122050-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
400 PM EDT SUN JUL 12 1998

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* TORNADO WARNING FOR...
  DESOTO COUNTY IN SOUTH CENTRAL FLORIDA

* UNTIL 450 PM EDT

* AT 359 PM...A TORNADO WAS INDICATED BY NATIONAL WEATHER SERVICE
  DOPPLER RADAR 6 MILES NORTH OF FT. OGDEN. THE TORNADO WAS MOVING TO
  THE SOUTH AT 5 TO 10 MPH.

A DOPPLER RADAR DETECTED TORNADO MEANS A TORNADO MAY NOT BE
OCCURRING AT THE MOMENT...BUT WILL LIKELY DO SO DURING THE WARNING
PERIOD. TAKE COVER IN A STURDY BUILDING. MOBILE HOMES AND CARS ARE NOT
SAFE.

The office that day

Everything else NWS Tampa Bay, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 12, 1:57 PM EDTSevere Thunderstorm WarningTBWPolk43 min
Jul 12, 2:48 PM EDTSevere Thunderstorm WarningTBWPolk47 min
Jul 12, 3:08 PM EDTSevere Thunderstorm WarningTBWHillsborough47 min
Jul 12, 3:30 PM EDTSevere Thunderstorm WarningTBWHardee45 min
Jul 12, 3:44 PM EDTSevere Thunderstorm WarningTBWManatee56 min
Jul 12, 3:46 PM EDTSevere Thunderstorm WarningTBWHighlands, Polk64 min

Nearby

Tornado Warnings in Florida, 1998Every tornado warning in 1998Tornadoes in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.